Low Voltage Capacitor Regulator
3.7μW 0.8V VCO-integrator-based high-efficiency capacitor-free low-dropout voltage regulator …
This paper presents a VCO-integrator-based high-efficiency low-dropout voltage regulator (LDO). Due to the integrator based architecture the LDO has higher efficiency, lower input voltage and better load regulation than traditional operational-amplifier based implementations. The proposed LDO was fabricated in 180nm CMOS …
Fully on-chip switched capacitor NMOS low dropout voltage regulator
This paper presents a 1.5 V 50 mA low dropout voltage (LDO) regulator using an NMOS transistor as the output pass element. Continuous time operation of the LDO is achieved using a new switched floating capacitor scheme that raises the gate voltage of the pass element. The regulator has a 0.2 V dropout at a 50 mA load and is stable for a …
LM27761 Low-Noise, Regulated, Switched-Capacitor Voltage …
The LM27761 low-noise regulated switched-capacitor voltage inverter delivers a very low-noise adjustable output for an input voltage in the range of 2.7 V to 5.5 V. Four low-cost capacitors are used in the application solution to provide up to 250 mA of output
Fully integrated, low drop-out linear voltage regulator in 180 nm …
This paper presents a capacitor-free low dropout (LDO) linear regulator based on a dual loop topology. The regulator utilizes two feedback loops to satisfy the …
Switching regulator fundamentals (Rev. C)
the points break the current flowing in the low-voltage coil winding (in car manuals, this capacitor is referred to as a condenser). 1.3 Pulse Width Modulation (PWM) All of the switching converters that will be covered in this paper use a form of output voltage ...
A switched-capacitor voltage regulator for ultra-low power energy ...
In this paper, an SC voltage doubler-based voltage regulator for ultra-low power energy harvesting applications is presented. It produces a stable 1.2-V power supply, using inputs from 0.63 V to 1.8 V. External compensation and on-chip output capacitor ensure good performance even with zero load current and any load capacitance. The …
Choosing capacitors for a linear voltage regulator
I''m trying to use an LM1117 linear voltage regulator to convert to 3.3v (input voltage will be 9 or 5 volts; not yet decided). The datasheet suggests using 10uF tantalum capacitors on the input and output. While I could just go with the suggestion, I find most of the ...
Engineers note: Capacitors are key to voltage regulator design
The LDO regulator (sometimes called a "PNP" regulator) differs from the NPN regulator because the power transistor is a single PNP: the good news is that dropout voltage can be as low as the saturation voltage of the PNP (a few hundred millivolts). However, the single PNP has lower beta compared to the NPN Darlington, so the
Smart power management with combined current-feedback low …
Fig. 2 illustrates the current-feedback LDO voltage regulator employed in the proposed smart power management scheme, which mainly consists of three segments. The first segment is a standard LDO voltage regulator. The second segment is composed of two current mirrors, where one consists of N 3 and N 4 and the other consists of P 1, P …
[PDF] A capacitor-free CMOS low-dropout regulator with damping-factor-control frequency compensation …
A 1.5-V 100-mA capacitor-free CMOS low-dropout regulator (LDO) for system-on-chip applications to reduce board space and external pins is presented. By utilizing damping-factor-control frequency compensation on the advanced LDO structure, the proposed LDO provides high stability, as well as fast line and load transient …
Dual active capacitive feedbacks for output capacitor-less low …
An output capacitor-less low-dropout (OCL-LDO) voltage regulator with dual active feedback paths is presented in this paper. The dual active feedbacks provide frequency compensation and spike voltage suppression. Two feedback loops are formed by capacitors Cc and Ca, respectively. The capacitor Ca path detects output voltage to …
voltage regulator
I work with low-power DC voltage regulators. I am already aware of the formula to calculate the size of smoothing capacitor(s). This can be an iterative process of testing one size with a scope and $begingroup$ This reason may be buried in one of the many good answers Some (only) regulators can be damaged by the output capacitor …
Full on-chip CMOS low dropout voltage regulator using MOS capacitor …
A full on-chip and area efficient low-dropout voltage regulator (LDO) which, exploiting the technique nested miller compensation with active capacitor (NMCAC) to eliminate the external capacitor without compromising the stability of the system in the full output current range. In This paper, we presents a full on-chip and area efficient low …
A Low Ripple Switched-Capacitor Voltage Regulator Using Flying ...
In this work, a switched-capacitor voltage regulator (SCVR) that dithers flying capacitance to reduce output voltage ripple is presented, and the benefits of such ripple reduction are investigated. In the proposed technique, SC converters are designed to run at the maximum available frequency, and the flying capacitance for different phases is …
A capacitor-free fast-response low-dropout voltage regulator
An off-chip capacitor-free low-dropout (LDO) regulator using an improved frequency compensation scheme is proposed. The proposed LDO regulator employs a …
Low Drop-Out Voltage Regulators: Capacitor-less Architecture …
Demand for system-on-chip solutions has increased the interest in low drop-out (LDO) voltage regulators which do not require a bulky off-chip capacitor to achieve stability, also called capacitor-less LDO (CL-LDO) regulators. Several architectures have been proposed; however comparing these reported architectures …
3.7μW 0.8V VCO-integrator-based high-efficiency capacitor-free low ...
This paper presents a VCO-integrator-based high-efficiency low-dropout voltage regulator (LDO). Due to the integrator based architecture the LDO has higher efficiency, lower input voltage and better load regulation than traditional operational-amplifier based implementations. The proposed LDO was fabricated in 180nm CMOS …
Low Drop-Out Voltage Regulators: Capacitor-less Architecture …
Demand for system-on-chip solutions has increased the interest in low drop-out (LDO) voltage regulators which do not require a bulky off-chip capacitor to achieve stability, also called capacitor-less LDO (CL-LDO) regulators. Several architectures have been proposed; however comparing these reported architectures proves difficult, as each has a …
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